GTAC Observation Log 1. Date : 30/11/2021 2. Observation Sr. No. : 13707 3. Observer : Nissim Kanekar, Balpreet Kaur 4. Observer\'s Email : nkanekar@ncra.tifr.res.in, bkaur@ncra.tifr.res.in 5. Project Name : %latex% A search for HI 21cm absorption from CO-emitting damped Lyman-alpha absorbers at $ z\\\\\\\\approx 2$ 6. Project Code : 41_057 7. Operator(s) : Sachin, Shilpa, Shriram, Surender 8. Command File : /data1/gtac/cmd/nissim/29nov_1.py,, /data1/gtac/cmd/nissim/41_057_b0201.py 9. LTA File : /gsbifrdata1/29nov/41_057_29nov2021_gsb.lta.1, /gsbifrdata1/29nov/41_057_29nov2021_gsb.lta, /gwbifrdata1/29nov/41_057_29nov2021_gwb.lta.1, /gwbifrdata1/29nov/41_057_29nov2021_gwb.lta 10. LogFlag File : ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 463.8 MHz ,RF2 : 463.8 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 525 MHz, ILO2 : 525MHz , IVLO1 : 61.2 MHz, IVLO2 : 61.2 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 16 MHz,ON, IF-CH2 : 4+14 dB, 16 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1_shivneri 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : TGC 18. GSB Fstop : ON 19. GAIN EQ : ON 20. Stokes : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : OFF 23. ACQ BW : 16.666666 MHz 24. Final BW : 4.167 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:511:1 27. LO5 -1 : 138.8 28. LO5 -2 : 166.2 29. Frequency Parameters (TPA) : 463.8 463.8 525 525 61.2 61.2 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. C01 : Servo Problem. C11 : Self power fluctuation at 130 pol 33. Note for Backup : 34. Start and End Time of Obs.(IST): 29 Nov 2021 19:00:00 - 30 Nov 2021 03:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :26 37. RFI Status : 38. Comments (During Observations) : ------------GWB Setting--------------------------------------------------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 16384 GPU_CHAN_NUM : 0:16383:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 510 510 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 41_057 GPU_CNTRL : TGC GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : ON GPU_TPA : From online/TGC tpa GPU_BITS : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF GPU_PFB : ON GPU_PFB_TAPS : 4 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_WALSH : OFF GPU_ENV : RELEASED -------------------------------------------------------------------------- 19:00:00 : Started first set-up. 19:26:38 : Started command file. /data1/gtac/cmd/nissim/29nov_1.py 22:30:00 : C02 servo problem. 22:45:00 : Stopped command file. 22:53:00 : Started scan on 3C48. 23:00:00 : Stopped scan and observing session over. -------------------------------------------------------------------------- -------------------------------------------------------------------------- 23:00 : Changed the settings for GSB. TPA 417.5766 417.5766 480 480 62.4234 62.4234 Step : 3 ------------GSB Setting--------------------------------------------------- GSB_MODE : Realtime GSB_LTA : 8 GSB_ACQ_BW : 16.666666 GSB_FINAL_BW : 208333325 GSB_EDGE_FRQ : 0 GSB_CHAN_MAX : 512 GSB_CHAN_NUM : 0:511:1 GSB_STOKES : Total_Intensity GSB_CNTRL : TGC GSB_FSTOP : ON GSB_BEAM_1 : OFF GSB_BEAM_2 : OFF GSB_GAINEQ : ON GSB_BB_LO : 137.5766:167.4234 GSB_HOSTS : gsbm1_shivneri undefined : OFF undefined : 306 undefined : RELEASED -------------------------------------------------------------------------- 23:25 : \'/data1/gtac/cmd/nissim/41_057_b0201.py\' command file started. 23:38 : MSEB power failed. 23:47 : MSEB power restored. 03:00 : Stopped command file and observing session over.